Code

 Header...
int getint (const char text[]);

 int main(){
   ... 

»  int nplayers, nteams;
»  char message[]="Number of teams?";

»  nteams=getint(message);

»  nplayers=getint("Number of players?");

»  return 0;
}

// Print out a message, read an integer from the keyboard
// and return that integer value.
 int getint(const char text[]){
   ... 

»  int val;
  
»  printf("%s\n", text);
»  scanf("%d", &val);

»  return val;
}